kdumpctl: fix a typo
    
    Resolves: bz1981684
    Conflict: Minor conflict resolved easily
    Upstream: Fedora
    
    commit bcd8d6a47b3a1daa7ffb62561b7288dbadab3e61
    Author: Kairui Song <kasong@redhat.com>
    Date:   Thu Jul 15 03:08:28 2021 +0800
    
        kdumpctl: fix a typo
    
        Recommanded -> Recommended
    
        Signed-off-by: Kairui Song <kasong@redhat.com>
        Acked-by: Coiby Xu <coxu@redhat.com>
    
    Signed-off-by: Kairui Song <kasong@redhat.com>